Pump-piston.



No. 643,985. Patented Feb. 20,- I900. A. J. SALISBURY.

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(N M d pplication filed Afar. 20, 1899.]

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UNITED STATES PATENT OFFICE.

ALFRED J. SALISBURY, OF LOS ANGELES, CALIFORNIA.

PUMP-PISTON.

SPECIFICATION forming part of Letters Patent- No. 643,985, dated February 20, 1900.

Application filed April 20, 1899. Serial No. 713,734. (No model.)

T at whom it may concern.-

Be it known that I, ALFRED J. SALISBURY, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Pump-Pistons,of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to an improved form of pump-piston; and my invention consists in certain features of novelty hereinafter described and claimed.

Figure I is a section of my improved device, taken on line I I, Fig. III. Fig. II is a side elevation showing the valves open. Fig. III is a top view showing portions broken away to more clearly show the parts. Fig. IV is a side elevation of my improved valve, showing packing secured thereto. Fig. V is a side elevation of the valve without the packing.

Referring to the drawings, 1 represents the circular bucket for raising liquid, and 2 a central post secured to the bucket.

3 represents an annular recess near the lower end-ofthe bucket, in which is secured a packing-ring 4, made of leather or other suitable material.

5 represents an annular follower provided with a screw-thread 6. The lower end of the bucket 1 is also threaded, as shown at 7, for

receiving the follower. V

8 represents an outwardly-extending flange on the lower end of the follower 5. When the follower is screwed into position, the flange 8 at its lower end clamps the lower end of the packing-ring 4 against the lower end of the bucket 1, as shown at 9, and securely holds the same in position.

10 represents the pump-rod,which is screwed into the upper end of the post 2, as shown at 11, and has a jam-nut 12. thereon.

13 represents a loose ring resting upon a shoulder 14 on the post 2, therebeing pendent lugs 15 extending outwardly from the ring 13.

16 represents a movable ring or link surrounding the post 2, said ring being loose enough to permit of a vertical movement on the post.

17 represents the frame, which is a part of the bucket l and which supports the post 2, said frame also serving as a partial seat for the valves.

18 represents my improved valves, which are preferably formed of flat metallic plates 19, having L-shaped hooks 20 on their. inner ends, said hooks consisting of a vertical section 21 and an outwardly-bent section 22.

In Fig. IV, I have shown my improved valve with a leather packing 23 secured to the valve-plate by rivets 24., there being a flange 25 on the inner end of the plate, forming a shoulder, against which the inner end of the packing abuts, said shoulder preventing wear of the inner end of the. packing. In placing the valves in position they are hooked in behind the ring 16, as shown in Figs. I and II, the vertical section of the valve-hook permitting a vertical play of the valve on the ring 16. On the downward stroke of the bucket the ring 16 is permitted to move upwardly until it comes in contact with the pendent lugs 15. At the same time the valves 18 swing inwardly and upwardly into the position shown in Fig. II, the vertical section 21 of the valve-hook being of such length as to permit the inner edge of the valve to move outwardly from the ring 16, thus leaving a space 26 between the valve, the ring, and the post, through which the water flows and washes away any sediment that may have accumulated around thehinge of the valve, the inward movement of the swinging valve being limited by the bent arm 22 of the hook coming in contact with the side of the post 2. (See Fig. II.) As the bucket ascends the valves 18 are closed, the ring 16 following down on top of the valves to its normal position. It will be noted that 1 he valve 18 has an independentvertical move ment on the ring 16, and it also has an inward and outward movement on said ring. At the same time all of the valves have a vertical movement owing to the rise and fall of the ring 16. I preferably use four va ves, one for each side of the square post 2. do not confine myself to any specific number.

It Will be noted by the construction described and especially shown in Fig. I that each of these Valves may be seated independent of the other valves in the series. For instance, I have shown in Fig. I a foreign substance 27, such as-gravel, which has been deposited upon the valve-seat, and although one of the valves is held partially open the other valve or valves are closed. Fig. I also demonstrates the fact that one end of the valve may be held open and the other end closed,thus making the valve eifective to some extent, although it ispartially displaced by means of sediment. On the following downward stroke of the bucket the valve moving upwardly and outwardly from its hinge permits the water to thoroughly cleanse its seat by washing away the foreign matter.

I claim as my invention- 1. In a pump-piston, the combination of a bucket having a central post, a ring loosely mounted on the post, a valve having a flat body portion and a hooked portion for engaging said ring, substantially as set forth.

2. In a pump-piston, the combination of a bucket having a central post, a ring provided with lugs thereon seating on the post, a movable ring surrounding the post, and valves loosely hinged to said movable ring, substantially as set forth.

In a pump-piston, the combination of a ing 'L-shaped hooks whereby they are loosely connected with the loose ring; substantially as described.

5. A pump-piston comprising a bucket having a post, a loose vertically-sliding ring surrounding the post, means for limiting the upward movement of the ring, and valves each having L-shaped hooks whereby they are loosely connected with the loosering, a flange at its inner end, and a packing; substantially as described. I

ALFRED J. SALISBURY. Witnesses:

J. W. KEMP, J AS. E. KNIGHT. 

